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WO2008128383A1 - Caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe - Google Patents

Caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe Download PDF

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Publication number
WO2008128383A1
WO2008128383A1 PCT/CN2007/001350 CN2007001350W WO2008128383A1 WO 2008128383 A1 WO2008128383 A1 WO 2008128383A1 CN 2007001350 W CN2007001350 W CN 2007001350W WO 2008128383 A1 WO2008128383 A1 WO 2008128383A1
Authority
WO
WIPO (PCT)
Prior art keywords
information code
digital camera
information
image data
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2007/001350
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English (en)
Chinese (zh)
Inventor
Jun Feng
Xin Tian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AIGO RESEARCH INSTITUTE OF IMAGE COMPUTING Co Ltd
Original Assignee
AIGO RESEARCH INSTITUTE OF IMAGE COMPUTING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AIGO RESEARCH INSTITUTE OF IMAGE COMPUTING Co Ltd filed Critical AIGO RESEARCH INSTITUTE OF IMAGE COMPUTING Co Ltd
Priority to PCT/CN2007/001350 priority Critical patent/WO2008128383A1/fr
Publication of WO2008128383A1 publication Critical patent/WO2008128383A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00307—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a mobile telephone apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2101/00—Still video cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3204—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a user, sender, addressee, machine or electronic recording medium
    • H04N2201/3205—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a user, sender, addressee, machine or electronic recording medium of identification information, e.g. name or ID code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3212—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a job, e.g. communication, capture or filing of an image
    • H04N2201/3214—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a job, e.g. communication, capture or filing of an image of a date
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3212—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a job, e.g. communication, capture or filing of an image
    • H04N2201/3215—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a job, e.g. communication, capture or filing of an image of a time or duration

Definitions

  • Digital camera for acquiring watermark information by external device and system thereof
  • the present invention relates to a digital camera that acquires watermark information by an external device and a system thereof and an external device, and more particularly to a digital watermark information acquired by an external device is received and added to a digital image through a receiving device built in the digital camera. Digital camera and its system with external devices.
  • Digital cameras have become very popular due to the increasing image shield and the increasingly simplified desktop PC interface. Digital cameras are capable of taking digital images, allowing them to be transmitted or printed over the Internet to a color printer. Today, digital cameras have become a must-have item in our lives. Today, with the increasing popularity of digital technology, it is not difficult to modify and edit digital photos with various software. This has facilitated the tampering with the information recorded in digital photos, especially for some insurance, contracts, and electronic evidence. Photos such as notes, their authenticity is particularly important. Therefore, the problem of authenticity verification of digital photos is brought about. Our solution to this problem is through the photo-fidelity built into the digital camera.
  • Digital watermarking technology can effectively prevent digital images from being forged.
  • Digital watermarking technology has two branches for different purposes: one is a robust watermark, which is used to protect the author's copyright, and is used to provide legal basis in the event of a copyright dispute; one is a fragile watermark (or semi-fragile watermark), It is used to detect whether a multimedia work has been maliciously altered or damaged.
  • a fragile watermark or semi-fragile watermark
  • Lu-bar watermarks it must be robust enough that after the multimedia work has been attacked and tampered with, it can still be extracted correctly, in order to prove the author's copyright.
  • the main purpose of the fragile watermark is to prove the authenticity of the multimedia work.
  • Multimedia photos can't be used as evidence in court now, because multimedia photos can be easily used by various software (such as
  • a digital camera with a watermarking device is disclosed in the prior art, please refer to the Chinese patent document "Digital Image Watermarking Method and Corresponding Device and Digital Camera with Watermark Addition” Application No.: 2005100556808, Application Date: March 2005 23 ⁇ , wherein the digital camera comprises: means for obtaining a digital signal signal value, which reflects the optical image into a digital signal converted into an analog signal in the digital camera; and a bit dividing device that presses data of each pixel point in the digital image The bit is divided into a bit for calculating an image feature value, a bit of the hidden watermark, and a bit for locating the tamper region; and the device for initializing the tamper region is set to a fixed value of all the bits of the locating region of the positioning image; a value device that calculates a unique eigenvalue of the input digital signal based on the bit of the calculated image feature value described above And an encryption device that encrypts the calculated feature value by using a private key; the watermark embedding device
  • the feature values of the watermark are obtained by calculating a unique digest of the digital image signal, which can enable the feature value to be correctly extracted or prove the authenticity of the work, however,
  • the content of the watermark information is not perfect.
  • the personal ID information such as the author's location and the author's electronic signature are not included, but the information is widely used in many fields.
  • the digital camera itself cannot be used by the prior art. Obtaining more information, so that when the digital image works by adding a watermark to record hidden information, the hidden information is not complete, and the hidden information can not be widely used in daily life, social security and the like.
  • the technical problem to be solved is that the digital camera can be received by an external device through an internally set receiving device.
  • the digital watermark information is loaded into the digital image captured by the digital camera, so that the image data can be safely hidden from useful information such as location information and user identity information.
  • Another object of the present invention is to provide a novel digital camera that acquires watermark information through an external device and a system thereof and an external device.
  • the technical problem to be solved is to enable an external device to receive an information code request command to obtain an information code. When it does not affect the digital camera to take the next picture.
  • a digital camera comprising: a digital camera function module, which is triggered by a shutter button to acquire image data; a communication interface for data transmission with an external device; and a data requesting device that can request an information code Sending to the external device through the communication interface; the data acquiring device is configured to acquire the information code sent by the external device through the communication interface; and the digital watermark loading module loads the information code received by the external device into the digital camera function module by watermarking In the image data.
  • the aforementioned digital camera further includes a triggering structure for triggering said data requesting means.
  • the trigger structure is a shutter button of a digital camera.
  • the data requesting device and the digital camera function module or a part thereof are connected in parallel to the shutter button, thereby triggering the data requesting device to transmit information when the shutter button is triggered to trigger the digital camera function module.
  • Code request instruction In the foregoing digital camera, the data requesting device and the digital camera function module or a part thereof are connected in parallel to the shutter button, thereby triggering the data requesting device to transmit information when the shutter button is triggered to trigger the digital camera function module.
  • the information code request instruction includes a code for identifying corresponding image data; the information code acquired by the data acquisition device includes the above code; the code camera further includes an association module, which establishes a code and an information code. One-to-one correspondence with the image data.
  • the code may be a file name automatically generated when the image data is captured, a time at the time of shooting, or a randomly generated code.
  • the digital watermark loading module includes: an information code embedding device, receiving an information code received by the data acquiring device and image data converted by the device for acquiring a digital signal signal value, and embedding the information code into the image data a bit dividing device, configured to bitwise divide data of each pixel in the digital image embedded with the information code into bits for calculating image feature values and bits for hiding watermarks; and means for calculating feature values, the device is used for The bit in the data for calculating the image feature value calculates the unique feature value of the input digital signal; the watermark embedding device embeds the feature value into the bit of the digital signal hidden watermark.
  • the external device is a mobile phone or a PDA.
  • the communication interface is a wired USB interface, a wireless USB interface, a Bluetooth interface, an infrared interface, a 1394 interface, or a radio frequency and FM interface.
  • the information code is: positioning information obtained by a wireless communication network or a global satellite positioning system and/or system time of an external device, a device serial number, and stored identity information.
  • the digital watermark loading module may convert the information code into binary bits and embed the converted binary information code as watermark information into the image data, or convert the information code into a binary image and The information code in the form of the converted binary image is embedded in the image data.
  • the information code request command or information code is transmitted in the form of a text message or a message S.
  • a system for acquiring watermark information by using a mobile communication terminal is characterized in that the system is composed of a mobile communication terminal and a digital camera, wherein the digital camera comprises: a digital camera function module, triggered by a shutter button to acquire image data a communication interface for performing data transmission with an external device; a data requesting device transmitting an information code request instruction to the mobile communication terminal via the communication interface, the information code request instruction including a code for identifying corresponding image data; and the data acquisition device
  • the communication interface the information code sent by the mobile communication terminal, the information code includes the above code, establishing a one-to-one correspondence between the information code and the image data
  • the digital watermark loading module the watermark corresponding to the image data is watermarked Loading the data into the image data
  • the mobile communication terminal includes: a data transmitting device that transmits the information code to the data acquiring device, and a data request receiving device that receive
  • the data transmission mode of the communication interface and the external device includes a wired connection transmission, a wireless USB transmission, a Bluetooth or an infrared transmission.
  • the mobile communication terminal is a mobile phone or a PDA.
  • the information code is current location information acquired by the mobile communication terminal through the mobile communication server, and identity identification information of the mobile communication terminal user.
  • the mobile communication terminal transmits the information code to the digital camera in the form of a text message or an MMS.
  • the present invention relates to a digital camera that acquires watermark information by an external device and a system thereof.
  • the digital camera comprises: a digital camera function module, which is triggered by a shutter button to acquire image data; a data requesting device, which can send an information code request instruction to an external device; and a data obtaining device, configured to acquire an information code sent by the external device a digital watermark loading module that loads the information code received by the external device into the image data captured by the digital camera function module in a watermark manner.
  • the present invention realizes that necessary information is received into a digital camera and stored in the image data in the form of a watermark, so that useful information such as the photographer's position information, identity information, and shooting time can be recorded in real time.
  • the digital camera of the present invention for acquiring watermark information by an external device and a system composed thereof with the external device have at least the following advantages:
  • the system for acquiring information code by an external device in the watermark information is based on a digital camera and an external device such as a mobile phone, a PDA, etc., thereby realizing receiving more necessary information into the digital camera and watermarking it. It is stored in the image data, so that the image data can record useful information such as the photographer's position information, identity information, and shooting time in real time;
  • the method for embedding watermark information of an external device into image data captured by a digital camera is simple and easy, and the information code of the embedded image can be inversely restored to the original recorded necessary information, thereby being suitable for each required image data. Use in real and comprehensive information.
  • FIG. 1 is a view showing the configuration of a system for acquiring watermark information by an external device of the present invention.
  • FIG. 2 is a schematic diagram showing the internal structure of a digital camera capable of receiving watermark information according to the present invention.
  • Fig. 3 is a flow chart showing a method of embedding watermark information in image data of a digital camera of the present invention.
  • the system for acquiring watermark information by an external device of the present invention mainly uses the useful information in the external device to transmit to the digital camera in the form of information code, and uses the information code as the watermark information to be embedded in the image or video data before imaging, thereby
  • the image or video data captured by the mobile communication terminal provides accurate and valid authentication information.
  • FIG. 1 is a schematic structural diagram of a system for acquiring information code embedded in watermark information by an external device according to the present invention, including a digital camera and an external device.
  • the digital camera capable of receiving the information code is used in combination with an external device, which is only a preferred embodiment of the present invention, and can also be used alone.
  • the digital camera having the data acquiring device for receiving digital watermark information includes: a digital camera function module, It can convert image information acquired by the optical system into image data and output; communication interface for data transmission with an external device; data request device, which is triggered by a shutter button of the digital camera, outward through the communication interface
  • the device sends an information code request instruction of the request information code;
  • the data acquisition device acquires the information code sent by the external device through the communication interface;
  • the digital watermark loading module loads the information code received by the external device into the digital camera function module.
  • the storage module receives and stores the image data embedded with the digital watermark, and the storage module may be a storage medium such as a memory or a memory card.
  • the information code request instruction is different according to the content of the information code requested by the operator, and the required information code content may be selected by the operator, and the information code request instruction is generated according to the requested information code content, and the instruction content may be Stored in the storage media shield.
  • the digital camera includes a trigger data requesting device triggering structure, the triggering structure is a shutter switch as a main switch of the digital camera function module and the data requesting device; or the circuit of the data requesting device is connected in parallel with the digital camera function module or a part thereof Connected together to trigger the data requesting device to transmit an information code request command when the shutter button is pressed to trigger the digital camera function module.
  • the digital camera function module includes: means for acquiring a digital signal signal value, the device is used for reading The value of the digital signal is taken out, which is a digital signal converted from an optical signal into an analog signal in the digital camera.
  • the digital watermark loading module includes: an information code embedding device, receiving an information code received by the data acquiring device and image data converted by the device for acquiring the digital signal signal value, and embedding the information code in the image data;
  • the data of each pixel in the digital image embedded with the information code is bitwise divided into bits for calculating image feature values and bits for hiding watermarks; means for calculating feature values, the device is for calculating image feature values according to image data
  • the bit calculates the unique eigenvalue of the input digital signal; the watermark embedding device embeds the eigenvalue into the bit of the digital signal hidden watermark.
  • the above external device includes various devices capable of data processing, such as a mobile phone, a PDA, etc.
  • the data acquiring device includes a communication interface for data transmission with an external device, the communication interface is a wired USB interface, a wireless USB interface, and a Bluetooth. Interface, infrared interface, 1394 interface or RF, FM interface.
  • the information code request command or the information code can also be transmitted by means of text message or ⁇ S (MMS).
  • the information code acquired by the external device may be information such as a fingerprint image acquired from the fingerprint sensor, an electronic signature obtained by the handwriting input function, or the positioning information obtained through the wireless communication network or the global satellite positioning system, or may be external The system time of the device, the device serial number, the stored identity information, and so on.
  • the external device is provided with a data request receiving device for receiving an information code request command sent by the data requesting device set in the digital camera, and a data transmitting device, wherein the data transmitting device can pass the above
  • the data transmission method and the digital camera data acquisition device perform data transmission.
  • the external device can obtain the corresponding content according to the information code request instruction described above.
  • the information code is sent to the data transmitting device so that the digital camera can receive it through the data acquiring device.
  • the information code of the mobile communication terminal may be information stored or recorded in the SIM card.
  • the indication information in the SIM card includes: International Mobile Registration Identity Information (IMSI), which includes a telecommunication country number, a mobile network number, a number of the mobile communication terminal in the mobile network, a temporary mobile registration identity information (TMSI), and a mobile Network location area information (LAI); phone number, short message, etc. Since there is more indication information in the SIM card, it is preferable to read only the international mobile registration identity information and the mobile network location area information in the SIM card as the information code.
  • a SIM card information reading module may be disposed in the mobile communication terminal or the digital camera, and the label information in the SIM card is read by the module and sent to the data transmitting device.
  • the mobile communication terminal can access the mobile communication network used by the gateway GPRS support node (GGSN), and can record the mobile communication terminal through the serving GPRS support node (SGSN).
  • Current location information information such as current location information acquired by the mobile communication server may be sent to the mobile communication terminal by means of text message or MMS (MMS), and the mobile communication terminal receiving the above information may send the received text message or ⁇ S (MMS) and other information are sent directly as data and received by the digital camera's data acquisition device.
  • MMS text message
  • ⁇ S ⁇ S
  • the information code output by the receiving server processing module may occupy more data length, if necessary, the information code may be entropy encoded or the like by the external device to reduce the length of the information.
  • the data acquisition device may receive stable information (eg, identity information, date in system time, area range information in the positioning information, and the like) from the external device to the digital camera before shooting, and the information in the form of stable information
  • stable information eg, identity information, date in system time, area range information in the positioning information, and the like
  • the transmission of the code can be initiated by the external device, and the digital camera can automatically receive after receiving the stable information, and can also set whether to receive, or can be set to perform information code transmission only with the specified external device.
  • the digital camera can also request the stable information in the external device by the data requesting device at the time of non-shooting, and cause the external device to automatically or passively transmit the information code containing the stable information to the data acquiring device.
  • the data transmitting apparatus of the external device actively transmits the new information code to the data acquiring apparatus provided in the digital camera, and the data acquiring apparatus can automatically or via The user receives the information code upon confirmation.
  • the digital camera of the present invention further includes an association module, which establishes a correspondence relationship between the information code request instruction, the information code and the image data, and the association module is configured by Both hardware and software can be implemented.
  • an association module which establishes a correspondence relationship between the information code request instruction, the information code and the image data
  • the association module is configured by Both hardware and software can be implemented.
  • the information code is matched with the code in the corresponding information code request instruction, that is, the information code and the information code request instruction can be in accordance with the code included therein.
  • the corresponding image data is recognized, and the information code is sent to the data acquisition device of the digital camera, and the information code is embedded in the corresponding image data according to the matched code.
  • the above code may be a file name automatically generated when image data is captured, a time at the time of shooting, or a randomly generated code.
  • the matching of the above code with the information code request instruction and the image data may be a file name or a label using the code as the file (ie, the information code request instruction and the information code), or may be a code package and the file together to generate a file package.
  • the software may also be used to associate the code with the data of the file, or by inserting the code into a specific position of the file, thereby finally making a one-to-one correspondence between the information code request command, the information code, and the image data.
  • a method for embedding digital watermark information received by a receiving device into image data is to embed a watermark into image data by using a digital camera having the above structure, the method comprising the following steps:
  • the shutter button to activate the digital camera function module set in the digital camera to capture the optical image.
  • digital signal processing is performed on the image signal and processed.
  • Image data output in addition, when the shutter button is pressed, the data request device is also activated, and the data request device sends an information code request command to the external device;
  • the external device can obtain the corresponding information code according to the content requested by the information code request instruction, and send the information code to the data transmitting device, so that the digital camera can receive the data through the data acquiring device.
  • the third step is: receiving, by the data acquiring device, the information code sent by the external device, and loading the information code into the image data captured by the digital camera function module by using the digital watermark loading module, specifically, the data of the information code Converted to an ASCII 01-bit string, and then hidden to the next lower order of the image data, thereby embedding the specified position of the image data;
  • the processed image data is subjected to a digital watermark loading operation (ie, a secondary watermark loading step), for example, dividing the bit, calculating the image feature value, and embedding the feature value into the designated bit bit by bit, and storing the watermarked image data.
  • a digital watermark loading operation ie, a secondary watermark loading step
  • the information code in the step of embedding the information code in the image data in the third step, may be first converted into a binary bit and embedded into the image data using the converted binary as a watermark, and may also be converted into, for example, 30 X
  • a binary image of 40 pixels ie, width by height
  • the binary image is a black and white image composed of 0, 1.
  • the width and height of the binary image can be recorded in a fixed bit in the bit of the hidden information code (for example, the bit occupied by the first bit of the bit of the hidden information code, the last bit record) High-occupied bits), and embedding the binary image sequentially in the bits of other hidden information codes.
  • the width and height can be read first, so that the number of bits of the binary image can be determined. And then read out the values of the digits in sequence. Because the content of the information code and the occupied data space are different, for example, the bits occupied by the electronic signature or the fingerprint information cannot be determined, so the bits occupied by the information code are different, and thus the bits occupied by the hidden information code can be fixed, and The bit of the limited information code does not exceed the bit occupied by the hidden information code. When the bit occupied by the information code is less than the bit of the hidden watermark, the bit not embedded with the information code may not be changed. Further, when the information code is embedded in the image data in binary, the bit occupied by the information code may be recorded in a wide manner in the same manner as above, and the position 0 of the record high may be set to 1.
  • the above digital watermark loading module can be implemented by hardware or by software, and the algorithm for embedding watermark can be consistent with the digital watermark loading algorithm for image or video on a computer in the prior art.
  • the digital camera user When the digital camera user receives the image data in some manner, it can verify the copyright information of the image data, and can also extract various information hidden in the digital watermark, and the image data of the digital watermark loaded image is authenticated.
  • the process may include: a step of verifying whether the image data has been tampered with; if not falsified, extracting the information code embedded in the image data according to the specified position of the embedded watermark information; decoding the information code, and outputting the displayed step.
  • the step of the digital watermark verification and information code extraction of the image data of the digital camera of the present invention may further include: a step of confirming the identity of the authenticator, the step may be to confirm the password after the authentication step is started, or In order to confirm the image data without being tampered with, the password is confirmed, thereby preventing unnecessary output of the information code and protecting the copyright owner's personal information.
  • the information code includes identity information such as a SIM card number and a mobile phone serial number
  • the identity information may be embedded in a specific location of the image data, and in the authentication process, the identity information embedded in the specific location is first extracted, and The identity information is compared with the identity information of the user at the time of authentication. If they are consistent, the information code is extracted and displayed.
  • the above authentication process may also incorporate the step of locating the corrupted tamper region in the image data.
  • the step of extracting the digital watermark information of the image by the digital camera of the present invention is the same as the algorithm for embedding the watermark information, which can be known to those skilled in the art, and will not be described again.
  • the image data captured by the digital camera is embedded in the watermark.
  • the digital camera function module can be replaced with a digital camera, a digital recorder, or the like, and the same can be obtained by the above structure and method.
  • the information code is loaded into the multimedia data with watermark information.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Editing Of Facsimile Originals (AREA)

Abstract

L'invention concerne une caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe. La caméra numérique comprend : un modèle de fonction de caméra numérique qui est déclenché par le bouton (de commande) d'un obturateur afin qu'elle puisse acquérir les données d'image ; des moyens demandant des données qui peuvent envoyer une instruction de code d'information au dispositif externe ; des moyens d'acquisition de données qui peuvent recevoir des informations du dispositif externe ; un modèle d'ajout de filigrane de données qui ajoute le code d'information reçu du dispositif externe aux données d'image prises par le modèle de fonction de caméra sous forme d'un filigrane. La solution permet de recevoir les informations nécessaires dans la caméra numérique et de les enregistrer dans les données d'image par le biais d'un filigrane, ainsi il est possible de recevoir les fichiers utiles tels que les informations de position, les informations d'identité et la date de la prise de la photo de l'auteur.
PCT/CN2007/001350 2007-04-23 2007-04-23 Caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe Ceased WO2008128383A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/001350 WO2008128383A1 (fr) 2007-04-23 2007-04-23 Caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2007/001350 WO2008128383A1 (fr) 2007-04-23 2007-04-23 Caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe

Publications (1)

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WO2008128383A1 true WO2008128383A1 (fr) 2008-10-30

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PCT/CN2007/001350 Ceased WO2008128383A1 (fr) 2007-04-23 2007-04-23 Caméra numérique et son système d'acquisition d'informations de filigrane par le biais d'un dispositif externe

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050013714A (ko) * 2003-07-29 2005-02-05 엘지전자 주식회사 카메라가 구비된 단말기 및 상기 카메라가 구비된단말기의 촬영 데이터 처리 방법
US20050248668A1 (en) * 2004-05-07 2005-11-10 Akihiro Machida Digital camera producing image embedded with diagnostic characteristic
CN1708084A (zh) * 2004-06-05 2005-12-14 三星电子株式会社 识别图像的拍摄者的设备
CN1838172A (zh) * 2005-03-23 2006-09-27 北京华旗数码影像技术研究院有限责任公司 数字图像水印的方法及相应装置和可添加水印的数码相机
CN1997105A (zh) * 2005-12-31 2007-07-11 北京华旗数码影像技术研究院有限责任公司 通过外部设备获取水印信息的数码相机及其组成的系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050013714A (ko) * 2003-07-29 2005-02-05 엘지전자 주식회사 카메라가 구비된 단말기 및 상기 카메라가 구비된단말기의 촬영 데이터 처리 방법
US20050248668A1 (en) * 2004-05-07 2005-11-10 Akihiro Machida Digital camera producing image embedded with diagnostic characteristic
CN1708084A (zh) * 2004-06-05 2005-12-14 三星电子株式会社 识别图像的拍摄者的设备
CN1838172A (zh) * 2005-03-23 2006-09-27 北京华旗数码影像技术研究院有限责任公司 数字图像水印的方法及相应装置和可添加水印的数码相机
CN1997105A (zh) * 2005-12-31 2007-07-11 北京华旗数码影像技术研究院有限责任公司 通过外部设备获取水印信息的数码相机及其组成的系统

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